Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

Authors: Isaac Nongwe, Vilas Ravat, Reinout Meijboom, Neil J. Coville

Abstract:
Monodispersed hollow carbon spheres (HCSs) were made by decomposition of gaseous CH3CN over silica Stöber spheres in a CVD reaction. The nitrogen doped HCSs (N = 8.7%) were used as support for well dispersed Co₃O₄ nanoparticles (7–8 nm; 1% and 2% Co). The Co/N-HCS samples were calcined at various temperatures. The materials calcined at 300^◦C for 3 h were found to oxidize styrene to styrene oxide (styrene epoxidation) using dry air as oxidant (120^◦C/DMF) with 99% styrene conversion and 85% selectivity to styrene oxide; they could also be reused in repeat catalytic reactions.

Keywords:
Nitrogen doped carbons
Hollow carbon sphere
Cobalt oxide
Nanoparticles
Styrene oxidation

Published in: Applied catalysis A: General  (Volume 466, Pages 1-314, 10 September 2013)

Publisher: Elsevier  

ISSN Information: 0926-860X

Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

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